import Vue from "vue";
import Router from "vue-router";
import iView from "iview";
import config from "@/config";

import { getToken } from "@/libs/util";
import routes from "./routers";

const { homeName } = config;
const LOGIN_PAGE_NAME = "login";

Vue.use(Router);

const router = new Router({
  routes,
  mode: "hash"
});

router.beforeEach((to, from, next) => {
  const token = getToken();
  iView.LoadingBar.start();

  if (!token && to.name !== LOGIN_PAGE_NAME) {
    // 未登录且要跳转的页面不是登录页
    next({
      name: LOGIN_PAGE_NAME // 跳转到登录页
    });
  } else if (!token && to.name === LOGIN_PAGE_NAME) {
    // 未登陆且要跳转的页面是登录页
    next(); // 跳转
  } else if (token && to.name === LOGIN_PAGE_NAME) {
    // 已登录且要跳转的页面是登录页
    next({
      name: homeName // 跳转到homeName页
    });
  } else {
    next();
  }
});

router.afterEach(to => {
  iView.LoadingBar.finish();
  window.scrollTo(0, 0);
});

export default router;
